Hot Rods my 46-47-48 Plymouth Project?

how can you tell the difference between a 46, 47, 48 Plymouth coupe? here is a few pics of my newest project.

 

Maybe difference would be 16" or 15" wheels but not sure other than serial or engine numbers. Check over at the P15 D24 site.

 

Your car is a P-15 Club Coupe, it may be a 3 passenger (without a back seat) or a 6 passenger (with a back seat). A Business coupe would have been a 3 passenger P-15 with a lower and shorter roof line. Pictured is a business coupe for reference.

According to the Standard book of Chrysler, 1924-1990, The P-15 was unchanged between all the 46-48 model years. Annual production records were not maintained. Production for all Plymouth 2 door 6 passenger Club Coupes between 1946 and 1948 were 10,400 units, and production for all Plymouth 2 door 3 passenger coupes (both Club Coupe and Business Coupe) between 1946 and 1948 was 16,117 units. Gene

 

You will probably need to figure it out based on the serial number. This pdf has info on the serial numbers for the 40's mopars: http://www.pwchryslerclub.org/MoparSheetMetal-1940-1948.pdf

 

Changes from 46 are subtle. The headlight trim rings for the 46 are rolled under where they meet the fender. The key hole protector for the doors is round stamped piece, 47 and later were cast figure 8 shaped. 46 rear tail light bezel refleters are white. 16 inch wheels were used till mid 47. The serial number will speak to when and where the car was built. Early 46's had different driveshaft u joints. Front is ball and trunion, rear is cross and roller bearing. Later cars had ball and reunion on both ends. Early 46 have oil dipstick going directly to the hole, later cars have a metal tube the dipstick goes into. Serial numbers can be looked up in Plymouth illustrated parts book, and maybe on carnut.com on the car specs page.